Alarm



'Nov. 17 1925- 1,562,067

. v. E. sPRousE ALARM Filed April 1-3. 1925 IN vgnToa,

. Y r I Vc rner E. sprausc Patented New. 17, 1925..

1,562,067 PATENT OFFICE.

hurrah STATES VERNER E. SPEOUEKE, OF ENDIALQ'APOLTS, INDIANA, ASSIGNOR OF ONE-THIRD TO ,BURLEY L. PARK-1AM AND ONE-THIRD TO EARL I-IIGGINBOTHAIVI, BOTH OF IN- DIANAPOLIS, INDIANA.

ALARM.

To (all 107mm it may concern:

Be it known that I, VERNER E. SPROUSE, a citizen of the United States, residing at Indianapolis, in the county of Marion and 6 State of Indiana, have invented certain new and useful Improvements in Alarms, of which the following is a specification.

My invention is that of an alarm device for the purpose of being operative in connection with amovable closure, such as a door or window sash, to sound an alarm when the closure is changed from a predetermined position.

lVith my alarm, a window sash may be left partially open, as for ventilation, and the connection from the alarm to the sash, being flexible and attachable at any elevation of the sash, causes the alarm to be sounded vupon the sash being further opened. I eliminate any fixed attachment to the sash and thereby provide an alarm immediately adjustable to any individual requirement. I

I accomplish these and such other objects N as will become apparent in the following description by the means as illustrated in the accompanying drawing, in which Fig. 1 is a perspective view of my alarm shown mounted on a window frame indicated in fragn1ent;"Fig.'2,'a front elevation of the alarm with the cover and a fragment of the bell removed; Fig. 3, a vertical section taken on the line 33 in Fig. 2; Fig. 4, a top plan view of the attaching r vacuum cup; and Fig. 5, a section taken on the line 55 in Fig. 4.

Like characters of reference indicate like parts throughout the several views.

I form a base 6 with the supporting legs 7 and 8 having holes 9 and 10 therethrough to receive the wood screws 11 as a means of securing the alarm to a frame 12, here shown in fragment, Fig. 1, as a window frame, although my alarm is equally adapt- 45 ed for use in conjunction with a door. The

base 6 is provided with the flanges 13 projecting outwardly on each side to receive the cover 14 therebetween, which may be further secured to the base by bolts 15 pass- 50 ing through the top and bottom cover flanges 16.

The lever 17 is pivotally secured to the base 6 by the bolt 18 and extends outwardly beyond the base through a slot formed by cutting away the flange 13 and the cover 14, and has the overturned section to form the finger piece 19. The opposite end of the lever 17 projects substantially across the base and has the overturned flange 20, best shownin 3, a part of which flange 20 is notched out from the end adjacent the base side to permit the trigger 21, which is pivoted to the base 6 by the bolt 22, to swing therein and engage its stop 23 under the flange 20.

The trigger 21 extends downwardly from the stop 23 to form the heel 24 to receive the hooked end of the trigger spring 25 and thence outwardly parallel to the base to the overturned lip '26, through which the end of a flexible chain 27, here shown as the well known ball type chain, is secured. The chain 27 is taken upwardly and out through the guide pipe 28 in the top of the housing cover 14.

An L-shaped spring bracket 29 is secured to the base 6 by means of the screws 30 and 31 which pass through the bracket and in turn through the feet 32 and 33 of the bell base 34. The lower leg of the bracket terminates in the car 35 which receives the hook end of the lever spring 36, the upper end of the spring 36 being engaged through the end of the lever flange 20, thereby tending to pull the lever 17 downwardly to the position as indicated by the dash lines. The upper end of the bracket 29.has the upturned car 37 through which is hooked the other end of the trigger spring 25 such that the trigger 21 is normally pulled backwardly to permit the stop 23 to engage under the flange 20 when the lever 17 is sufiiciently raised to the position as shown in Fig. 2 by the solid lines.

The bell base 34 is of the usual and well known construction containing the customary spring and gear wheels (not shown) employed to operate the ratchet wheel 38 which in turn imparts a reciprocating motion to the hammer 39 to cause it to strike the bell 40 from the inner side. The spring of the bell mechanism is wound by turning the bell 4O likewise in the well known and usual manner and as the bell 40 projects flush through the cover 14, as in Fig. 1, the winding may be accomplished easily and quickly from without the cover 14. v

The base 34 is further provided with the outwardly spring pressed button 41 having the hammer stop 42 thereon such that the hammer 89 is held until the button 41 is pressed inwardly, whereupon the hammer 39 is released and may operate freely.

The flange 20 on the lever 17 projects outwardly sufficiently to contact the button tl. so as to press the button il when the dashed line position of the lever 17 is assumed.

To secure operating connection with the window sash, I provide a soft rubber vacuum cup 48, with the outer head 44 about which is placed the spring hook 45 to receive by one end the chain 27.

In operating my alarm, the sash to is placed in the position wanted, either closed or partially opened; the vacuum cup is preferably imiistened and pressed against the glass of the sash so that the chain is extended upwardly with no appreciable slack, as in Fig. l; the alarm mechanism is in the position as shown by the full lines in Fig. 2; and then should the sash be raised, the chain 27 pulls the trigger 21 outwardly and upwardly to the dashed-line position, Fig. 2, where-- upon the lever 17 is immediately pulled downwardly by the spring 36 and in turn presses the bell button 41 and thereby sets the bell to ringing. The bell will continue ringing until run down or until the lever 17 is manually raised by pushing on the finger piece 19 to permit the trigger 27 to be pulled back and be engaged to hold the lever 17 up off of the button 41.

The vacuum cup 43 holds so tightly to the glass that in order to prevent its being damaged by upward travel of the window sash, 1 provide the spring hook 45 of such design that the hook will release itself from the cup 43 before the cup is damaged but not until after the alarm has been set off.

While I have here described my invention in the form now best known to me, it is ob vious that it is equally applicable to closures other than windows and that structural details may be required to be changed for such adaptation, and I, therefore, do not want to be limited to the precise form as shown, nor any more than may be required by the following claims.

I claim:

1. In an alarm, a base, an alarm signal secured to the base, a spring pressed control button projecting from the signal, a lever pivoted to the base, an outwardly turned flange on the lever adapted to contact said button, a trigger pivoted to the base adapted to swing into a slot formed in said flange, a stop on the trigger, a trigger spring normally holding said stop under said flange, a spring pulling said lever against said button upon release of said trigger, and means of releasing said trigger from said lever.

In an alarm, a base, an alarm signal secured to the base, a spring pressed control button projecting from the signal, a lever pivoted to the base, an outwardly turned flange on the lever adapted to contact said button, a trigger pivoted to the base adapted to swing into a slot formed in said flange, a stop on the trigger, a trigger spring normally holding said stop under said flange, a spring pulling said lever against said button upon release of said trigger, a housing secured to the base, a finger set on said lever projecting from the housing, a guide through the housing, a vacuum cup, a chain passing through said guide and interconnecting said cup and said trigger.

In testimony whereof I aflix my signature.

VERNER E. S PROUSE. 

